Hi Kevin, the reason i have such an aversion to using high alkaline based cleaners comes from many years of using these harsh chemicals and seeing first hand the problems they cause from continuous use, the picture Geoff posted is a perfect example, as you know we provide cleaning services as well as cleaning products so really i should be the last person exposing the problems caused to hard floors from using high alkaline based chemicals, as these problems generate plenty of deep cleaning work for us which you know pays very well, there is a saying that goes People don't care how much you know, until they know how much you care. Well we do care and i am happy to share my experience with others in the hope that it may be of benefit to them, i have said before Kevin that its entirely up to each person to choose whichever product, but as long as i am a member on this forum i will continue to share my experiences of the detrimental damage caused to surfaces from the continuous use of high alkaline based harsh chemicals, and the reason i say harsh is because if you check out the ingredients used on the msds to produce these caustic and corrosive cleaners well anybody can see this information for themselves.